A comet is a small celestial body composed primarily of ice, dust, and rocky material that orbits the Sun. When close to the Sun, it displays a visible atmosphere or coma and sometimes a tail.
5 Must Know Facts For Your Next Test
Comets are often described as 'dirty snowballs' due to their composition.
The two main parts of a comet are the nucleus and the coma.
Comet tails always point away from the Sun due to solar wind and radiation pressure.
Comets originate from two main regions: the Kuiper Belt and the Oort Cloud.
The periodicity of comets can vary, with some having short periods (less than 200 years) while others have long periods (more than 200 years).